Cartridge for stapler and stapler

ABSTRACT

A stapler ( 1 ) of the present invention includes a retaining part ( 3 ) having a staple pusher ( 11 ), a storing section ( 9 ) that stores a staple ( 20 ), and a receiving base ( 5 ) that hat bents leg parts ( 23 ) after piercing the staple ( 2 ) pushed out by the staple pusher ( 11 ) through a sheet material to bind the sheet material ( 60 ) with the staple ( 20 ). The staple ( 20 ) includes left and right shoulder parts ( 21 ) against which the staple pusher ( 11 ) abuts, leg parts ( 23 ) extending substantially perpendicularly from the shoulder parts ( 21 ) and a pattern part ( 27 ) having an arbitrary shape and provided between the left and right shoulder parts ( 21 ). The pattern part ( 27 ) is inclined against the leg parts ( 23 ) and the storing section ( 9 ) is provided, on one side thereof, with a take-out opening ( 13 ) of the staple ( 20 ) that is large enough to allow the pattern part ( 27 ) to pass.

TECHNICAL FIELD

The present invention relates to a stapler that binds multiple sheetmaterials.

BACKGROUND ART

Conventionally, a staple for a stapler includes shoulder parts exposedto a surface of a sheet material and leg parts extending substantiallyperpendicularly from both ends of the shoulder parts. In a state thatthe leg parts pierces through the multiple sheet materials, they arebent at the rear side of the sheet to bind the multiple sheet materials.

However, since the conventional staple is structured to have only ashape indispensable for ensuring a sheet binding function, the exposedportion is limited to a linear shape, so that the staple is poor indesign.

While, Japanese Patent Laid-Open No No. 6-173917 discloses one in whicha disc-like pattern part is formed on the shoulder parts.

However, the staple having the disc-like pattern part on the shoulderparts is of little practical use since a large number thereof cannot bestored in a cartridge at one time because of its shape. Moreover, in thecase of storing the multiple staples each having the pattern part, sincethe pattern parts of the adjacent staples interfere with each other, theleg portions of the staple must be stored in an oblique direction to aface along a guide groove part. If the staple is pushed out from atake-out opening as it is, trouble is caused in piercing the leg partsthrough the sheet material to generate difficulty in performing correctbinding.

The present invention has been made with consideration given to theaforementioned problem, and an object of the present invention is toprovide a cartridge that is capable of storing multiple staples eachhaving a pattern part on shoulder parts and capable of binding sheetmaterials correctly, and a stapler having the cartridge.

DISCLOSURE OF INVENTION

In order to solve the above problem, a first invention is a cartridgefor a stapler that stores multiple staples to be closely arranged inparallel, wherein a cartridge case includes a staple take-out opening onone side; a guide groove part that mounts lower ends of leg parts of thestaple thereon to guide movement to the take-out opening; a spring thaturges the staple in the cartridge to the take-out opening side; and astaple pusher insertion opening, which is formed on an upper portion ofthe take-out opening, through which a staple pusher is inserted into thecase and wherein the staple for the stapler includes right and leftshoulder parts against which the staple pusher abuts; leg parts that arebent after extending substantially perpendicularly from the shoulderparts to pierces through sheet material; and a pattern part having anarbitrary shape between the right and left shoulder parts.

According to this invention, the multiple staples are closely arrangedin the cartridge in parallel, and the staples in the cartridge are urgedto the take-out opening side by the spring. In the staple urged to thetake-out opening, the staple pusher is inserted from the staple pusherinsertion opening, which is formed on an upper portion of the take-outopening, and the shoulder parts of the staple is pushed, so that thestaple is pushed out. In this way, since the pattern parts, each whichis provided between the right and left shoulders of the staple, can becontained to be put on top of one another, a large number of staples canbe stored in the cartridge at one time.

Moreover, the staple with a different pattern part is inserted to thecartridge, so that sheets of paper can be bound with the staple with thedifferent pattern part by replacement of the cartridge and a goodlooking appearance can be enjoyed.

A second invention is a stapler that binds sheet materials with astaple, including a retaining part having a staple pusher; a storingsection that stores staples; and a receiving base that bents leg partsafter piercing the staple pushed out by the staple pusher through thesheet materials; wherein the staple includes right and left shoulderparts against which the staple pusher abuts; leg parts that extendsubstantially perpendicularly from the shoulder parts; and a patternpart having an arbitrary shape between the right and left shoulder partsand being inclined against the leg parts; and wherein the storingsection has a staple take-out opening, on one side thereof, with a sizethat is large enough to allow the pattern part to pass.

According to the second invention, in order to bind the sheet materials,the sheet materials are placed between the receiving base and theretaining part, the staple pusher abuts against the shoulder parts ofthe staple by the pressing operation of the retaining part, so that theshoulder parts are pushed out downwardly from the take-out opening. Thetip ends of the leg parts of the pushed staple pierce through the sheetmaterials, so that the leg parts are bent, thereby the sheet materialsare bound. Since the take-out opening is formed to have a size that islarge to allow the pattern part of the staple to pass, not only thestapler with the pattern part but also the normal staple with no patternpart can be used.

A third invention is that the storing section includes a guide groovepart that mounts lower ends of the leg parts of the staple thereon toguide movement to the take-out opening; and a spring that urges thestaple in the cartridge to the take-out opening side; and wherein thestaple is guided to a position of the take-out opening along the guidegroove part by urging of the spring, and the staple is stopped at thetake-out opening.

According to the third invention, since the staple stored in the storingsection is guided to the take-out opening by the urging of the spring topush down the staple pusher, thereby pushing out the staple from thetake-out opening, the staple can be always placed at the take-outopening and a binding operation between the staple and the sheetmaterials can be continuously performed.

A fourth invention is that the staple pusher includes a take-out sectionthat guides the stored staple to the take-out opening; and a pressingsection that pushes out the staple standing by at the take-out opening;and wherein when the staple pusher is pushed down, the staple of thestoring section is guided to the take-out opening by the take-outsection and is positioned to cause the leg parts to stand at thetake-out opening, and sequentially when the staple pusher is furtherpushed down, the pressing section abuts against the shoulders to bepushed out.

According to the fourth invention, in the storing section, the staple isstored in an oblique direction against a face along the guide groovepart, and the staple pusher is pushed down, so that the staple istransferred to the take-out opening by the take-out section. The stapleis positioned to cause the leg parts of the staple to stand at thetake-out opening, and sequentially the staple pusher is further pusheddown, so that the pressing section abuts against the shoulders to bepushed out, and the tip ends of the leg parts of the staple piercethrough the sheet materials and the leg parts are bent, thereby thesheet materials are bound.

In this way, the staple pusher includes the take-out section that guidesthe staple in the storing section to the take-out opening and thepressing section that causes the leg pats to stand at the take-outopening, thereafter abutting against the shoulders to push out thestaple from the take-out opening. Accordingly, even when the leg partsare arranged to be inclined against the face along the guide groove partin the storing section, the shoulder parts can be pushed down in theperpendicular direction after the leg parts are positionedperpendicularly, and the leg parts can be correctly pierced through thesheet materials, thereby making it possible to firmly bind the sheetmaterials with the staple.

Moreover, since the pattern part is structured to be pushed by thestaple pusher, there is no need to take the shoulder parts of the staplewidely, thereby making it possible to enlarge the shape of the patternpart by the corresponding amount.

A fifth invention is that a thickness of the pattern part is smallerthan a width of the leg part in the staple.

According to the fifth invention, even when the staple is stored so thatthe legs parts are positioned perpendicularly against the face along theguide groove part, the pattern parts of the adjacent staples or theshoulder parts thereof do not interfere with each other. Accordingly,the lower ends of the leg parts of the adjacent staples are set to thesame level, thereby the multiple staples can be contained to be closelyarranged in parallel even if the legs parts are not contained to beinclined against the face along the guide groove part.

A sixth invention is that a width of the shoulder part in a direction ofthe guide groove part is smaller than a width of the leg part in thedirection of the guide groove part in the staple.

According to the sixth invention, even when the staple is stored so thatthe legs parts are positioned to be perpendicular against the face alongthe guide groove part, the shoulder parts of the adjacent staples do notinterfere with each other. Accordingly, the lower ends of the leg partsof the adjacent staples can be set to the same level, thereby themultiple staples can be stored to be closely arranged in parallel evenif the legs parts are not contained to be inclined against the facealong the guide groove part.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view schematically illustrating a stapleraccording to an embodiment of the present invention;

FIG. 2 is a perspective view illustrating a structure of a cartridge ofFIG. 1;

FIG. 3 is a side view of staples stored in the cartridge of FIG. 2;

FIG. 4 is a side view illustrating a modification of the staples of FIG.3;

FIG. 5 is a perspective view illustrating a stapler according to asecond embodiment of the present invention;

FIG. 6 is a side view illustrating staples to be stored in the cartridgeof FIG. 5;

FIG. 7 is a front view of each staple in a state that sheets of paperare bound;

FIG. 8 is a perspective view illustrating a storing section according toa third embodiment of the present invention;

FIG. 9 is a perspective view illustrating a periphery of a take-outopening relating to the storing section of FIG. 8;

FIG. 10 is a front view illustrating a staple according to a fourthembodiment of the present invention;

FIG. 11 is a front view illustrating a staple according to a fifthembodiment of the present invention;

FIG. 12 is a view illustrating a modification of a staple; (a) is aperspective view illustrating a modification of the staple according tothe fifth embodiment of the present invention; and (b) is a perspectiveview illustrating a modification of the staple according to the fourthembodiment of the present invention; and

FIG. 13 is a view illustrating a modification of the staple according tothe fourth embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

The following will specifically explain embodiments of the presentinvention based on the drawings.

FIG. 1 is a perspective view schematically illustrating a stapleraccording to an embodiment of the present invention; FIG. 2 is aperspective view illustrating a structure of a cartridge of FIG. 1; FIG.3 is a side view of staples stored in the cartridge of FIG. 2; FIG. 4 isa side view illustrating a modification of the staples of FIG. 3; FIG. 5is a perspective view illustrating a stapler according to a secondembodiment of the present invention; FIG. 6 is a side view illustratingstaples to be stored in the cartridge of FIG. 5; and FIG. 7 is a frontview of each staple in a state that sheets of paper are bound.

A stapler 1 according to a first embodiment includes a staple receivingbase 5 and a retaining part 3 having a staple pusher 11 rotatablyprovided at an end portion side of the receiving base 5, and a staplestoring section 9 is provided between the receiving base 5 and theretaining part 3, and a cartridge 7, which has multiple staples 20 forthe stapler 1 stored in parallel, is attached to the storing section 9.

The retaining part 3 includes the staple pusher 11 that pushes out thestaple 20 stored in the cartridge 7 to a take-out opening 13, and acentral portion of the staple pusher 11 is notched so that the staplepusher 11 abuts against shoulder parts 21 of the staple according to thepresent invention.

The receiving base 5 has a groove-like bending section 25 that is placedat a position opposite to the staple pusher 11 of the retaining part 3and bends leg parts 23 of the staple 21.

The cartridge 7 has the take-out opening 13 for staple 20 on one side ofa case 12. Moreover, a guide groove part 15 is formed at both sides of abottom part of the case 12, and the top ends of the leg parts 23 of thestaple 20 are placed on the guide groove part 15. At a position, whichis opposite to the take-out opening 13 and abuts against the staple 20,a movable plate 17 is provided, and a spring 19 for urging the staple 20in a direction of the take-out opening 13 is attached between themovable plate 17 and the case 12. The movable plate 17 is always urgedin the direction of the take-out opening 13 by the spring 19, so thatthe staple 20 contained at the front side of the movable plate 17 ispushed out in the direction of the take-out opening 13. At an upperportion of the take-out opening 13, there is formed an insertion hole(staple pusher insertion hole) for inserting the staple pusher 11.

The staple 20 stored in the cartridge 7 includes right and left shoulderparts 21 against which the staple pusher 11 provided in the retainingpart 3 abuts, and leg parts 23 that are bent after extendingsubstantially perpendicularly from both ends of the shoulder parts 21and piercing through sheet materials 60, and a pattern part 27 with anarbitrary shape is provided between the shoulder parts to be inclinedagainst the leg parts 23.

As illustrated in the figure, the pattern part 27 has a heart-shapesurface and the pattern part 27 is provided to be inclined against theleg parts 23. In addition, the pattern parts 27 and the leg parts 23 maybe provided to form a substantially T shape.

Regarding the staples 20 in the cartridge 7, the multiple staples 20 arestored to be closely arranged in parallel, and the respective patternparts 27 are set to be put on top of one another at the time of storingthe staples 20. In addition, the staples 20 are temporarily fixed withpaste, only a portion where the leg parts 23 come in contact with eachother is pasted, and only the staple 20, which is pushed by a sheetingoperation, is pushed out from the take-out opening 13.

An explanation will be next given of an operation of this embodimentbased on the aforementioned structure. In the case where the stapler 1is used, the retaining part 3 is first rotated to be opened from thereceiving base 5 and the cartridge 7 where the staples 20 are stored isset in a storing section 9.

Then, at the time of binding sheet materials 60, multiple sheetmaterials 60 are placed between the receiving base 5 and the retainingpart 3 and the staple 20 is pushed out by the pushing operation of theretaining part 3 to bind the sheet materials 60. More specifically, bythe pushing operation of the retaining part 3, the cutter 11 enters fromthe insertion opening on the upper portion of the cartridge 7, so thatthe shoulder parts 21 of one staple 20 placed at the take-out opening ofthe cartridge 7 are pushed. The top ends of the pushed shoulder parts 21of the staple 20 pierce through the multiple sheet materials. Then, theleg parts 27 are bent by the bending section 25, so that the multiplesheet materials are bound by the staple 20.

In the cartridge 7, after ending one binding operation, the moving plate17 is urged in the direction of the take-out opening 13 by the spring19, so that the remaining staples 20 are pushed in the direction of thetake-out opening 13 and the aforementioned operation is repeated.

Since the pattern part 27 appears on the surface of the sheet in thestate that the sheet materials 60 are thus bound, the exposed portion isnot limited to the conventional linear shape and the pattern part 27 isformed on the so-called stapled paper surface to provide a good-lookingappearance and an unexpected result.

Moreover, since the pattern part 27 is attached to the shoulder parts 21of the staple 20 corresponding to the binding portion of the sheetmaterials 60 and the sheet materials are retained by the sheet patternpart 27, the sheet materials 60 are less likely to come off the staple20 after being bound as compared with the case in which the sheetmaterials are bound with the linear staple.

Furthermore, since the pattern part 27 is attached to the shoulder parts21 of the staple 20, the pattern part 27 can be taken up from the sheetmaterials to be easily detached therefrom.

Another embodiment is next explained, and in the explanation, the samereference numerals as those of the aforementioned embodiment are addedto the same parts as those of the aforementioned embodiment and theexplanation is omitted. As illustrated in FIG. 5, according to thesecond embodiment, in the staple 20 stored in the cartridge 7, thepattern part 27 and the leg parts 23 form a substantially T shape, andthe tip ends of the leg parts 23 and the lower end of the pattern part27 are abutted against the guide groove part 15 of the storing section 9where staples 20 are stored to be closely arranged in parallel, and thepattern part 27 is stored to be inclined against the leg parts 23. Theretaining part 3 includes a pickup cutter 43, which drops the staple 20stored in the cartridge 7 on a standby section 41, and a push-out cutter45, which is provided at the take-out opening 13 for the pick-up cutter43 to push out the staple 20 that stands by in the standby section 41.

The insertion opening 8, which is provided on the upper portion of oneside of the cartridge 7, is shaped to expose the entirety of the patternpart 27 of the staple 20. Moreover, the pickup cuter 43, which picks upthe staple 20 through the insertion opening 8, is convex shaped at thecartridge side 7. Furthermore, the standby section 41 is provided at thelower section of the take-out opening 13 of the cartridge 7. The standbysection 41 includes a positioning guide 51, which positions the legparts 23 of the staple 20 pushed out from the cartridge 7, and anintroduction guide 53, which is provided at a position opposite to thepositioning guide 51, and the staple 20 is once stood by the standbysection 41 to correct the posture of the leg parts 23 of the staple 20to be perpendicular to the sheet materials, thereafter the staple 20 ispushed out.

Thus, since the pattern part 27 is structured to be pushed by the pickupcutter 43 or the push-out cutter 45, there is no need to take theshoulder parts 21 of the staple 20 widely, making it possible to enlargethe shape of the pattern part 27 by the corresponding amount.

An explanation is next given of a third embodiment with reference toFIGS. 8 and 9. The third embodiment is different from the aforementionedfirst and second embodiments in the point that the staples 20 aredirectly stored in the storing section 9 without using the cartridge 7and the staple 20 is pushed out from the take-out opening 13 by thestaple pusher 11.

The take-out opening 13 of the storing section 9 is formed to have asize that is large enough to allow the pattern part 27 of the staple 20to pass and is divided into a pattern part passing opening 13a throughwhich the pattern part 27 passes and a shoulder part passing opening 13bthrough which the shoulder parts 21 pass. In this way, since thetake-out opening 13 is formed to have a size that is large enough toallow the pattern part 27 of the staple 20 to pass, it is possible touse the general staple with no the pattern part 27 if the shoulder partpassing opening 13b through which the shoulder parts 21 pass.

An explanation is next given of a fourth embodiment with reference toFIG. 10. In the fourth embodiment, the thickness ((T) in FIG. 10) of thepattern part 27 of the staple 20 is smaller than the width ((W) in FIG.10) of the leg part 23 in the direction along the guide groove part 15.In this way, the thickness (T) of the pattern part 27 is provided to besmaller than the width (W) of the leg part 23 in the direction along theguide groove part 15. Therefore, even when the staple 20 is stored sothat the leg parts 23 are perpendicular to the face along the guidegroove part 15, a pattern part 27 a of one staple 20 a or a shoulderpart 21 a does not interference with a pattern part 27 b of the adjacentother staple 20 b or a shoulder part 21 b, and lower ends 24 a and 24 bof leg parts 23 a and 23 b of the adjacent staples 20 a and 20 b are inthe same level. Accordingly, the multiple staples 20 can be stored to beclosely arranged in parallel without inclining the legs 23 against theface along the guide groove part 15 at the time of storing the staples20.

A modification of the fourth embodiment is next explained. Asillustrated in FIG. 12(b), when a width of the shoulder part 21 in thedirection along the guide groove part 15 is M and a width of the legpart 23 in the direction along the guide groove part 15 is W, the widthM of the shoulder part 21 is provided to be smaller than the width W ofthe leg part 23. Therefore, when the staples 20 are closely arranged inparallel, the shoulder parts 21 of one of the adjacent staples 20 do notinterfere with the shoulder parts 21 of the other staple 20 and themultiple staples 20 can be stored to be closely arranged in parallelwithout inclining the legs 23 against the face along the guide groovepart 15 at the time of storing the staples 20, similar to the fourthembodiment.

Additionally, in the case where the staple 20 with the pattern part 27and the normal staple are used together, the width W of the leg part 23is provided to be the same as that of the leg part of the normal staple.

An explanation is next given of a fifth embodiment. As illustrated inFIG. 11, in the fifth embodiment, a lower end 27 a of the pattern part27 of the staple 20 is chamfered. In this way, since the lower end 27 aof the pattern part 27 is chamfered, an extra force is not required atthe time of binding the sheet materials 60, so that a smooth bindingoperation can be obtained. More specifically, when the shoulder parts 21of the staple 20 are seated from an upper portion, the tip ends of theleg parts 23 of the staple 20 pierce through the sheet materials 60 andthe leg parts 23 are bent. At the same time, the lower end 27 a of thepattern part 27 comes in contact with the sheet material 60, and whenfurther pressing is applied from an upper portion, the pattern part 27is changed from the inclination state against the surface of the sheetmaterial 60 to the parallel state. At this time, since the lower end 27a of the pattern part 27 is chamfered, the pattern part 27 is allowed tobe parallel to the surface of the sheet material 60 after the lower end27 a of the pattern part 27 comes in contact with the sheet material 60,so that an amount of force to press the staple 20 from an upper portionmay be small.

A modification of the fifth embodiment is next explained. As illustratedin FIG. 12(a), in this modification, a twist is formed in the shoulderparts 21 of the staple 20. The twist is formed by axially rotating theshoulder parts 21 in a direction illustrated by an arrow A, so that thepattern part 27 is easily rotated in the direction illustrated by thesame arrow A. In this way, since the twist is formed in the shoulderparts 21, the pattern part 27 can be easily changed from the inclinationstate against the surface of the sheet material 60 to the parallelstate, so that an extra force is not required at the time of binding thesheet materials 60 and a smooth binding operation can be obtained. Inaddition, it is desirable that the length of the twisting portion shouldbe short as much as possible. Since a portion of the shoulder parts 21in which no twist is formed is flat on its upper surface, the staplepusher 11 easily comes in contact therewith and the staple 20 issmoothly pushed out if the length of the twisting portion is short.

The present invention is not limited to the above described embodiments,and various modifications may be possible without departing from thescope of the present invention. For example, though the pattern part 27is heart-shaped in the present embodiments, the present invention is notlimited to this and a triangle, a square, or a polygon such as atriangle and the like, or a circle, an ellipse may be possible.Moreover, coloring and characters may be added to the surface of thepattern part 27.

In the third embodiment, the take-out opening 13 is formed on thestoring section 9 to have a size that is large enough to allow thepattern part 27 of the staple 20 to pass. However, the present inventionis not limited to this and the take-out opening 13 of the cartridge 7may be the take-out opening 13 having a size that is large enough toallow the pattern part 27 to pass as illustrated in FIG. 9.

In the fourth embodiment, the thickness (T) of the pattern part 27 ofthe staple 20 is smaller than the width (W) of the leg part 23 in thedirection along the guide groove part 15, thereby making it possible toarrange the leg parts 23 perpendicularly to the face along the guidegroove part 15 at the time of storing the staples 20. However, thepresent invention is not limited to this. In the case where the twist isformed in the shoulder parts 21 of the staple 20 as illustrated in FIG.12, portions 26 a and 26 b of the shoulder parts 21 a and 21 b of theadjacent staples 20, which interfere with each other, are chamfered asillustrated in FIG. 13, thereby making it possible to prevent thestaples 20 from interfering with each other. Even in this case, it ispossible to contain the multiple staples 20 to be closely arranged inparallel in the state that the leg parts 23 are arranged to beperpendicular to the face along the guide groove part 15 at the time ofstoring the staples 20 as illustrated in FIG. 10. The shoulder parts 21of the staple 20 may form a part of the pattern part 27 withoutprojecting from the pattern part 27.

The material of the staple 20 may be a resin material and others withoutbeing limited to the metal.

Though the guide groove part 15 has a projection along a longitudinaldirection at a position away from both walls of the storing section 9,the leg parts 23 of the staple 20 may be guided by abutting against bothwalls of the storing section 9 directly without having the projection.

In the first embodiment, the cartridge 7 is set in the storing section 9by rotating the retaining part 3 from the receiving base 5 to be opened.However, the present invention is not limited to this and this may beinserted from the front side of the storing section 9 of the stapler 1or the back side thereof.

Industrial Applicability

As mentioned above, the present invention is used as a cartridge for astapler suitable for binding multiple sheet materials with staples and astapler.

1-6. (canceled)
 7. A cartridge for a stapler that stores multiplestaples to be closely arranged in parallel, wherein a cartridge isattached to a storing section of the stapler; wherein a cartridge casecomprises: a staple take-out opening on one side; a guide groove partthat places lower ends of leg parts of the staple thereon to guidemovement to the take-out opening; a spring that urges the staple in thecartridge to the take-out opening side; and a staple pusher insertionopening, which is formed on an upper portion of the take-out opening,through which a staple pusher is inserted into the case; wherein thestaple for the stapler comprises: right and left shoulder parts againstwhich the staple pusher abuts; leg parts that are bent after extendingsubstantially perpendicularly from the shoulder parts to pierces throughsheet material; and a pattern part having an arbitrary shape between theright and left shoulder parts.
 8. A stapler that binds sheet materialswith a staple, comprising: a retaining part having a staple pusher; astoring section that stores staples; and a receiving base that bents legparts after piercing the staple pushed out by the staple pusher throughthe sheet materials; wherein a line, which connects the lower ends ofarranged multiple staples to each other, is substantially horizontal;wherein the staple comprises: right and left shoulder parts againstwhich the staple pusher abuts; leg parts that extend substantiallyperpendicularly from the shoulder parts; and a pattern part having anarbitrary shape between the right and left shoulder parts and beinginclined against the leg parts; and wherein the storing section has astaple take-out opening, on one side thereof, with a size that is largeenough to allow the pattern part to pass.
 9. The stapler according toclaim 8, wherein the storing section comprises; a guide groove part thatplaces lower ends of the leg parts of the staple thereon to guidemovement to the take-out opening; and a spring that urges the staple inthe cartridge to the take-out opening side; and wherein the staple isguided to a position of the take-out opening along the guide groove partby urging of the spring, and the staple is stopped at the take-outopening.
 10. The stapler according to claim 8, wherein the staple pushercomprises: a take-out section that guides the stored staple to thetake-out opening; and a pressing section that pushes out the staplestanding by at the take-out opening; and wherein when the staple pusheris pushed down, the staple of the storing section is guided to thetake-out opening by the take-out section and is positioned to cause theleg parts to stand at the take-out opening, and sequentially when thestaple pusher is further pushed down, the pressing section abuts againstthe shoulders to be pushed out.
 11. The stapler according to claim 8,wherein a thickness of the pattern part is smaller than a width of theleg part in the staple.
 12. The stapler according to claim 8, wherein athickness of the shoulder part in a direction of the guide groove partis smaller than a width of the leg part in the direction of the guidegroove part in the staple.
 13. The stapler according to claim 8, whereina corner portion of the lower end of the pattern part is chamfered inthe staple.
 14. The stapler according to claim 8, wherein a twist isformed around an axis of the shoulder parts and the pattern part isinclined against the leg parts in the staple.
 15. The stapler accordingto claim 14, wherein the shoulder parts of the staple cut off a portionwhere twisted portions of adjacent staples interfere with each other.16. The stapler according to claim 9, wherein the staple pushercomprises: a take-out section that guides the stored staple to thetake-out opening; and a pressing section that pushes out the staplestanding by at the take-out opening; and wherein when the staple pusheris pushed down, the staple of the storing section is guided to thetake-out opening by the take-out section and is positioned to cause theleg parts to stand at the take-out opening, and sequentially when thestaple pusher is further pushed down, the pressing section abuts againstthe shoulders to be pushed out.
 17. The stapler according to claim 9,wherein a thickness of the pattern part is smaller than a width of theleg part in the staple.
 18. The stapler according to claim 10, wherein athickness of the pattern part is smaller than a width of the leg part inthe staple.
 19. The stapler according to claim 9, wherein a thickness ofthe shoulder part in a direction of the guide groove part is smallerthan a width of the leg part in the direction of the guide groove partin the staple.
 20. The stapler according to claim 10, wherein athickness of the shoulder part in a direction of the guide groove partis smaller than a width of the leg part in the direction of the guidegroove part in the staple.
 21. The stapler according to claim 11,wherein a thickness of the shoulder part in a direction of the guidegroove part is smaller than a width of the leg part in the direction ofthe guide groove part in the staple.
 22. The stapler according to claim9, wherein a corner portion of the lower end of the pattern part ischamfered in the staple.
 23. The stapler according to claim 10, whereina corner portion of the lower end of the pattern part is chamfered inthe staple.
 24. The stapler according to claim 1 1, wherein a cornerportion of the lower end of the pattern part is chamfered in the staple.25. The stapler according to claim 12, wherein a corner portion of thelower end of the pattern part is chamfered in the staple.
 26. Thestapler according to claim 9, wherein a twist is formed around an axisof the shoulder parts and the pattern part is inclined against the legparts in the staple.
 27. The stapler according to claim 10, wherein atwist is formed around an axis of the shoulder parts and the patternpart is inclined against the leg parts in the staple.
 28. The stapleraccording to claim 11, wherein a twist is formed around an axis of theshoulder parts and the pattern part is inclined against the leg parts inthe staple.
 29. The stapler according to claim 12, wherein a twist isformed around an axis of the shoulder parts and the pattern part isinclined against the leg parts in the staple.
 30. The stapler accordingto claim 13, wherein a twist is formed around an axis of the shoulderparts and the pattern part is inclined against the leg parts in thestaple.